Loom cloth edge determining device



April 8, 1952 s. SCHNEEBELI 2,591,725

LOOM CLOTH EDGE DETERMINING DEVICE Filed Feb. 3, 1949 2 swans-swam 1 I H 1 v x? f? 5, J3 1 57 IN VEN TOR.

BY /7 n April 8, 1952 s. SCHNEEBELI I 2,591,725

LOQM CLOTH EDGE DETERMINING DEVICE Filed Feb. 3, 1949 2 SHEETSSHEET 2 I INVENTOR. Garn r/0 jtfI/VEE'BELI Patented Apr. 8, 1952 Gottfried Schneebeli, Zurich, "Switzerland, as-

signortoRobert Schwarzenbach & C0,, Thalwil, Zurich, Switzerland, organized under the laws of Switzerland Application February 3, 1949, Serial No. 74,420

6 Claims. (Cl. 139-4) This'invention relates to an apparatus for determining the position of a portion of a cloth being woven in a loom, such as the edge thereof relative to the loom. I

When the operation of a loom is interrupted 'ior any reason, such as because of a thread tangle or the like, the-subsequent adjustment will most {likely cause change in position of the last weft thread. This willresult in the formation of .--'a faultyplace in the fabric wherein the particul'ar'threads involved will be either closer or further apart causing a noticeable defect in the clam. In previous practice, the positioning of the cloth edge after a stoppage and adjustment or otherwise has been accomplished by approximation and by eye because of the lack of suitable mechanical means.

One of the objects ofthe invention isto locate in an improved manner a predetermined portion oi'the cloth,*suc'h as the last weft thread, relative to the loom, particularly for the purpose of eliminating defects in cloth previously caused when it has been necessary to remove the weft "thread or yarn last positioned by theshed.

one of the features of the invention is the use of amounting means locatable on a portion .of

the loom, "said mounting means havin an indicating means pivotally mounted thereon, the in- -didiitihg means having a feeler member projectable rectilinearly'relative to the 'indica'tinggauge on "the indicating means. The feeler member is sioned bearing'to assist in maintaining the close tolerances necessary. When the apparatus is 'rswungin'to operative'position relative to the cloth, e ieeler and indicating means can be used to -loc'ateorindicate the position of the cloth edge or last weft thread woven.

In'apreferred form of the invention, the indicating device is of the dial type and is mounted on-acarrier frame pivotally attached to the loom mounting means. The indicating device has a pointer operably connected to a feeler through a mane transmission system, such as gears or the like. The pointer or index member cooperates with'a graduated disc or dial'having index figures thereon. The dial with its index figures can be arranged so that it may be rotated and thus to be *set,-at various positions, such as zero, so as to -s1mpm thesetting of the feeler gauge in relation to-thecloth edge, particularly when the loom is r'eed 'yto be restarted.

In one aspect of the invention, the dial gauge may have means for mounting the same on the carrier frame in such manner so as to be adjustable thereon relative to the pivot axis of the carrier frame.

After the loom is stopped, the indicating device with its feeler arrangement is pivotally lowered unitarily so that an index finger or tongue means on the feeler can be positioned at or against the cloth edge. The reading of the pointer on the graduated disc is noted. Alternatively and preferably, the graduated disc is turned so that the pointer reads zero at this point. Then, after the loom has been adjusted, or the last thread or threads corrected, the feeler can be reset to'the same indicated position and the cloth edge returned to the identical position that it had when the loom was stopped. This will prevent defects in the cloth because of change in position of the last thread.

These and other advantages, features and objects of the invention will become apparent from the following description and drawings which are merely exemplary.

In the drawings:

Figure 1 is a top view of the device in operating position.

Figure 2 is a view looking in the direction 2-2 of Figure l with some of the parts broken away and others shown in section.

Figure 3 is a side view of the device with a gauge in an inoperative position.

Figure 4 is a back view of the frame showing a slightly different indicating device and adjusting means suitable for both types of indicating means.

Figure!) is a side view of the form of the invention shown in Figure 4.

Figure 6'is a rear view'of the device of Figure 4, showing a different type of spacer arrangement for the brackets.

In general, an indicating gauge is mounted on a carrie'rand the carrier is fastened to the loom or predet'ermlnedly located relative thereto. The carrier frame, indicating device, and the ieeler are oscillatable unitarily in and out of operative position relative to the cloth. When in operative positions, the ieeler element is rectilinearly movable relative to the indicating gauge so as to locate and indicate the last weft thread or cloth edge.

The warp threads In (Fig. 1) of the cloth in the loom are shown in conjunction with the last weft thread- H, the woven portion of the cloth being illustrated at l2. Supporting rod or member 13 be able to engage the cloth edge.

is fastened to the loom in any suitable manner and will serve to hold the mounting means as described hereafter, said support rod I3 being illustrated as extending transversely of the warp threads [0. It is evident that the support rod l3 can be mounted directly on the loom or in any predetermined manner in relation thereto.

The mounting means l4 for attaching the device to the loom may include a pair of brackets I5, It, said brackets having clamping screws I! of any suitable variety. Pivot shaft or rod I8 extends between the two brackets l5, iii. A stretcher or spacer rod 20 also can extend between the two brackets so as to assist in firmly holding the brackets in spaced relationship. The spacer rod and related elements can take various forms and may have a cover element 48, such as seen in Figure 6, fastened thereto, said cover element being suitably soldered, welded, or brazed to each of the bracket members. The spacer rod also may cooperate with the indicating device or carrier frame to limit the swinging movement thereof when the device is moved to an inoperative position.

Carrier frame 22 may be formed of sheet metal or other suitable material, said frame having a pair of shaped hinge members 23 thereon for pivotally mounting the carrier frame 22 on pivot shaft l8. In this manner, the carrier frame 22 -is swingable about pivot shaft i8.

A dial type indicating device or gauge 24 may be mounted on the carrier frame 22, the dial type device having a rotatable pointer or index member 25. Other types of suitable indicators can be used.

The feeler member 29 can have projections or tongues 30 at the end thereof, or other suitable reference means. The tongues can be arranged so that when the carrier frame is swung downwardly into operative position, the tongues will This'can be accomplished by proper arrangement of the members on the carrier frame and proper length of tongues. Preferably, a pair of relatively thin tongues are employed which will permit entry thereof between the warp threads.

The feeler element 29 is composed of a relatively rigid bar or element which is projectable relative to the indicating device 24 through the bearing or guide 3|. It is this aspect especially that enables the device to operate in an improved manner over previous forms. By having the feeler element projectable rectilinearly, instead of using jointed elements and other arrangements, accuracy in the setting can be obtained. The dial type indicating gauge illustrated has suitable gearing connections between the feeler element 29 and the pointer. A flexible setting, or pointer and feeler, operating element 31A is connected to the gauge in such a manner that pressure on knob 32 will cause the feeler element 29 to be rectilinearly projected through bearing 3!, said might be used, such as the solid push bar element seen in Figure 4,- g

A pivoted feeler tongue guard 33 is shown in a retracted or inoperative position in Figures 1 and 2, said guard being shown in a tongue shielding position in Figure 3.

The cover 36 of the indicating device is rotatable relative to the body of the dial gauge, said cover having a dial or disc 31 attached thereto with graduated figures thereon, the disc being rotatable therewith.

The dial type indicating gauge 38 (Fig. 4) can be mounted on itscarrier frame 39 by means of screws 40 and 4| engageable in the body of said dial type gauge 38. The gauge device of Figs. 1-3 can be mounted on the carrier in a similar manner. A plurality of spaced holes 42, 43 are provided in two rows in the carrier frame 29 so that the location of the dial type gauge can be varied on the frame. It is to be noted that the screws 43 and ,4! are offset relative to an axis transverse to the axis of movement of the feeler element and that the holes 42 and 43 are correspondingly located.

The dial type gauge shown in Figure 4 differs slightly fromthat shown in the previous embodiment in that the operating element 44 is in the form of a rigid element or rod instead of a flexible transmitting element as shown in Figure 1.

The support bar 45 has brackets 46 engaging the same in a manner similar'to that described for Figure l. The stretcher or spacer rod 47 connecting the brackets 46 can have a sheet metal element 48 mounted thereon, said sheet metal element being welded, brazed or otherwise joined to brackets 45 so as to assist in strengthening the assembly. The pivot shaft is indicated at 49 (Fig. 5) and the guard element at 50.

When the loom is stopped, the carrier frame with the dial and, feeler element 29 are swung downwardly from the inoperative position shown in Figure 3 to that of Figure 2, or so that the feeler end of the gauge can be projected to a position so that it can engage the cloth edge. After the guard has been raised to an inoperative position, the pointer and feeler operating element 32 is then operated until the tongues 30 of the feeler gauge will pass beyond the last weft thread so that the carrier frame can be oscillated a slight amount more to permit engagement of the tongues with the last weft thread. The knob 32 then can be released so that the tongues 30 will come into engagement with the edge of the cloth or the last thread. Thereafter, the cover 36 'can be turned so that the zero mark of the graduated disc is under pointer 25, locking screw 34 having been disengaged. The carrier frame withthe dial arrangement can be swung upwardly and out of the way so that necessary-corrections in the loom or cloth can be made. When the loom is again ready to be operated, the feeler gauge is brought into contact with the weft thread and the cloth or loom adjusted so that the pointer again reads zero, care being taken that the proper turn of the pointer is used in the event the feeler was extended more than one revolution of the pointer when determining thestopping point of the loom.

It is understood that variations can be made in the details of construction without departing from the spirit of the invention except as defined in the appended claims.

In the claims:

1. A cloth edge position determining device for a loom, comprising mounting means for attaching said device to a loom, a carrier frame pivotally fastened to said mounting means, an' indieating dial gauge having a rectilinearly projectable pointer operating feeler mounted on said frame, said frame, gauge and feeler being unitarily swingable about said pivot, so that said feeler is movable into and out of engagement with the cloth edge or the like, whereby the cloth can be predeterminedly located relative to the loom, and a settable index carrying member on said indicating dial gauge cooperable with said pointer.

2. A cloth edge position determining device for a loom, comprising mounting bracket means for attaching said device to a loom, a frame pivotally attached to said mounting bracket means, a gauge means having an indicating means thereon and a movable index carrying member cooperating therewith,'operating means to change the position of said indicating means and said index carrying member relative to each other, and a rigid feeler means projectably connected to said gauge means having a feeler element engageable with the edge of the cloth, said frame, gauge means and feeler being swingable about said pivot, so that said feeler is movable into and out of engagement with the cloth edge or the like, whereby the cloth can be predeterminedly located relative to the loom.

3, A cloth edge position determining device for a loom, comprising a mounting bracket for attaching said device to a loom, a carrier frame pivotally fastened to said mounting means, an indicating dial gauge having a rectilinearly projectable feeler mounted on said frame, said frame, dial gauge and feeler being unitarily swingable about the pivot of said frame on said mounting means, and means adjustably positioning said indicating dial gauge on said carrier frame, so that the location of said indicating dial gauge relative to the carrier frame pivot can be varied by changing the position of said indicating dial gauge on said carrier frame.

4. A cloth edge position determining device for a loom, comprising mounting bracket means for attaching said device to a support on a loom, a carrier frame pivotally fastened to said mounting bracket means, an indicating dial gauge means mounted on said frame, said indicating dial gauge means having a bearing and a rigid feeler rectilinearly projectable relative to said dial means and guided by said bearing, said frame, dial means and feeler being unitarily swingable about the frame pivot, so that said feeler can be swung substantially at right angles to said pivot into and out of engagement with the cloth edge or the like,-

whereby the cloth can be predeterminedly located relative to the loom.

5. A cloth edge position determining device for a loom, comprising a pair of mounting brackets for attaching said device to a support on said loom, a carrier frame pivotally fastened to said mounting brackets, a spacer bar extending between said brackets having a shaped cover extending between said brackets, an indicating dial means mounted on said frame, said indicating dial means having a bearing and a rigid feeler rectilinearly projectable relative to said dial means and guided by said bearing, said frame, dial means and feeler being unitarily swingable about the frame pivot, so that said feeler can be movable into and out of engagement with the cloth edge or the like, whereby the cloth can be predeterminedly located relative to the loom.

6. A cloth edge position determining device for a loom, comprising a pair of mounting brackets for attaching said device to a support on said loom, a carrier frame pivotally fastened to said mounting brackets, a spacer bar extending between said brackets having a shaped cover extending between said brackets, an indicating dial means mounted on said frame, said indicating dial means having a bearing, said dial means having a pointer and a settable index carrying member cooperating therewith, and a rigid feeler rectilinearily projectable relative to said dial means and guided by said bearing, said feeler having projecting tongues, said frame, dial means and feeler being unitarily swingable about the frame pivot, so that said feeler can be movable into and out of engagement with the cloth edge or the like, whereby the cloth can be predeterminedly located relative to the loom.

GOTTFRIED SCHNEEBELI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Gibbs May 14, 1935 

